davis



Jan. l1 1927.

E V A D E C.

SCRAPER 2 Sheets-Sheet 2 Original Filed Feb.' 29, 192,4

yPatented Jan. 111 1927.

:UNITED sTArEs EKJD'AvIs, or CHICAGO, ILLINOIS, AssIGNoR To GOODMAN MANUFACTURING COMPANILOF CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

CHARLES PATENT: OFFICE Application, filed 'rebrgary 29,v i924, serieu No. 695,894. :Renewed Jueza, i926.

ma erial and has for rit-s principal object to f 5prOvide an improved-v construction of apparatus of the class described. f VMy invention is particularly adapted for use in mines vwhere the course of movement ofthe scraper is :restricted along certain paths, als for instance in the room and pillar system of mining coal in which the coal is gathered by moving the scraper along the working face at one end of the room but must be turned at an angle at the corner of the room kfor movement along a cleared path at oney side of the room to the entrance thereof for loading into minecars. `One of the main problems in the operation of a scraper ydevice under these conditionsv has been to devise facileand yefficient means for controlling the movement ofthe scraper and `its draft lines so as to change its course without the use of cumbersome apparatus or excessive labor. Y

In the present invention I provide an im` proved apparatus whereby a draft line guide is fixed under tension at the desired ypoint of turning, with the draft line deflectedv thereabout, but bymeans of a by-passing element extending aboutone side of the scraper and continuous with the draft ropes at opposite ends'thereof, the rope guide is per-y mittedl to pass about the scraper either in a forward or rearward direction and the scraper is thus turned inits course without dan er of tipping. Y

The invention may be best understood'by reference to the drawings which illustrate one form in which it may be embodied.

In these drawings:

Figure l is a plan view of-a scraper constructed in accordance with my invention,

with parts broken away.

`Figure 2 is a front end'view of the scraper shown in Figure 1. l n

Figure 3 is aeview showingthe holding jack and guide in cooperating engagement with the scraper, thelatter being shown in section on line 3-3 of Figure 1. l

Figure 4 shows a modified form ofl guide holding bracket.` f

Figures 5, 6 and 7 are diagramsillustrating they operation of the scraper as applied to a coal mine using the room and pillar 5 5 A system ofv mining.

`Referring now tothe details, the draw.- ings show a scraper 1, preferably lof the bottomless type, having side walls 3 and 2 converging to'ward the4 rear, as shown.. Two kdraft ropes formoving the scraper yreciproccably comprise a head line 4 and a tail -line Said head rope and tail rope are at-Y v,

5. tached'at the forward and rearward -ends respectively of a by-pass guiding lmember 6. This by-pass member iscarried kin a ksub- Vstantially horizontal plane about one side of the scraper ,so as to afford an inwardly fac` ing bearing surface or track 7 substantially coi'itinuous with the head rope and tailk rope the by-pass member intersects the Vside wall 2 adjacent the forward end and .passes around the rear end of thev scraper. Suitable means of rigidly securing said member to theA scraper are provided as herein shown comprising rear bracketsl 9,9, connected to the reinforcing strip 8 above the track 7, and an elongated laterally extending bracket l() on the side wall 2 of the scraper and similarly attached to the reinforcing strip 8 as shown in Figurek 3. f f

rThe securing brackets 9, 9 and 10 are arranged above the by-pass member 7, and an elongated slot 11 isy formedy horizontally about theside wall 2 beneath said member vto permit freepassage of a holding sheave around the scraper, as will nowbe described.

Referring to Figure 3 and the diagrams shown inFigures 5, 6 and 7, it will be Seen that the obj ect of the by-pass member is to provide a continuous bearing with both draft ropes 4 and 5 for a guide sheave l2 secured at the point where it is desired to change the course of movement of the scraper,`as for instance, ina corner of a mine room 13. VThis guide sheave is secured by suitable means at the` proper height to this means comprises abracket 14 having an yupper arm 15 carrying said sheave and curv- IDI engage theby-pass track 7. As herein shown ving downwardly 4and back upon itselfV to ll form a foot 16 adapted to engage theground. u

,llie bracket is secured in place by a mine ariul and its sli-cave is :tree to rock inv a..

vertical plane and thus accommodate variations in the vertical heio'ht ot the scra 3er.

:n The bracket also has limited givotal inovement on thev iack. in Figure a modified forni of holdin(T bracket is shown in which D tliearm 15a ispiroted at. Q9 to permit vertical movement or said arin with respect to the lioldin` ack. in this instance also linit) ited'rotationct tlie b VTn order to niaiutiiii'tie forward eid of L e A u L L ,L n l the slot ll clear ot loose material 'for the 1eafward increment ot the guide sheave about the by-pass member G, an inwardly extending shield 2O is secured to the upper and lower margins oi saic. slot. ills shown herein this shielo is attached to a pair of inwardly extending ilanged inenibers 2l and 22, attached to the side wall 2. This shield also rondes reinforcement to the scraper wliicliis opened along one side at this point, as described.

The head and tail ropes e, i are preferably engaged by grocved end portions 23 and Qlcat the `rorward and rearward ends respectively ottlie by-pass nieinber (3, so as to l providethe desired continuous bearing sur- 'l'aceiior the guide sheaiie l2. rlie ends of the ropes are secured to said guide nieinber by suitable means such as eyes el, 5, respectively extending into slots 25 and Q6k and secured by pins Q7 and 2S, passed through their respective eyes.

i The. use and operation the device above described is as follows:

Reerringto the diagrams in Figures 5, 6 and 7, the scraper is shown in three positionsin the inine room 13. ln Figure 5 the scraper is gathering a load of loose material adjacent the working tace 30, said scraper being moved iter vardly by means ot the head rope Il which is passed at an angle about the guide sheavc l2 secured by a bracket le in the corner of the room adjacent the side wall 3l et the rocin. ln this instance the tail rope 5 extends over a guide sheave ,32 fined in a suitable position in the 'farcorner of therooni and troni thence to ar suitable winding druni (not shown) which may be in any desirable position to control the. ope-ration ot the head and tail ropes in the usual manner.

As the scraper is moved forwardly under rllie jack extends through the tension of the head'rope it reaches a position in which the guide sheave 12 entlie inner surface oiC the by-pass inemher 6, this suri'iace being continuous with ing movement is produced while the guide Sri' ce i 4 shown in Figure 6. rlhe turning movement gaged thereby, as shown in Figure 7. Dur.-

said head tail ropes, as heretofore described. lhe scraper is deflected and a turnili We passes to one side ot the curved track 7 or' the by-pass member into the position or the scraper is continued untilr the guide shears is passed and the tail rope 5` is eniiig the turning mov ment just describedtlie craper is filled with loose material but the.

tornare end or the slot 1.1 through which the sheave l); and supiiorting arm l5 are. passed is maintained free or" loose material.

by incans of a shield 20. ln the preferred torn rearward end of the by-pass track 7 approaches the rearward end ot the scraper quite closely. l iind this torni to be desirable in order to provide a compact construction wherein the by-pass connection and tail rope are kept close to the walls oi`v the craper so as to facilitate the loading opera.

tion. ln this instance it is necessary to elongate the slot ll through which the guide shea-Ve 'l2 and its supporting arm l5 extend so that a portion el' said sheave and arm pass through and within the boundaries of.

forni in which my invention may be ein-A bodied it will be understood'that theconstruction and arrangement ot' the various parts may be altered without vdeparting from its spirit and scope. l do ynot therefore, wish to be construed as limitingmyself to the speciific embodiment illustrated and described, vexcepting-as it may be limitedf in the appended claims.

l claiiii as my' invention:

l. ln scraper loading apparatus, a scraper, a by-pass member connected lto said scraper, draft ropes connected to said by-pass member and vforming therewith V,a continuous bearing` surface tor a xed guide whereby the scraper isv turned while in engagement with said guide.

2. ln a scraper loading apparatus, a scraper, a by-pass memberconnected to said scraper comprising` a track adapted for e11- shown it will be observed that thek lill) gagement with a guide, saidtrack extend-r ing in offset relation from the front tothe rear end of the scraper and having draft ropes attached at the opposite ends thereof end of the scraper and having draft ropes att-ached at the opposite ends thereof substantially on the longitudinal axes of said scraper to form a continuous ybearing surface for said guide.

4. In a scraper loading apparatus, la.y scraper provided'with side walls, a by-passmember connected to said scraper and adapted to provide continuous bearing for a fixed guide, said by-pass member intersecting one sidewall of said scraper and' extending rearwardly about the outside thereof, anddraft ropes attached at opposite ends of said bypass member. f

5. In a scraper loading apparatus, a

scraperkhaving a head and tail line adaptedk for reciprocably moving the same, a guide adapted to be fixed at a redetermined point for engagement with said draft ro es, and means on `said scraperl permitting fi'ee passage of said guide from one end of the scraper to the other inv either direction whereby said draft ropes may be successively engaged and the scraper turned while in engagement with said guide.

6. In a scraper loading apparatus, a scraper provided with side walls, a by-pass member comprising an inwardly facin ltrack adapted for engagement with a fixe guide, a head repeat the forward end yof said by-pass member-and a tail rope at the rear end thereof,`said ropes forming with yscraper provide said by-pass member a continuous bearing surface for said guide. v

7 In a scra er loading apparatus, a y with side walls, a by-pass member comprising an inwardly facin track ada ted for engagement with a fixe guide, and) curved laterally in offset relation with` the longitudinal axis of the scraper, a head rope atthe forward end of said by pass member and a tail rope` at the rear end thereof, said ropes forming with said bypass member .a continuous bearing surface for said guide.

8. In a scraper loading apparatus, a scrapery provided with side walls, a by-pass l member comprising an inwardly facing track adapted for engagement kwith a fixed guide, a head rope at the forward end of said bypass member and a tail rope at the rear end c thereof, said ropes forming with said bypass member a continuous bearing surface for said guide, saidby-pass member'intersecting one side wall andy supported at one side thereof to leave a passageway in said wall for said guide.

9. In a scraper loading f apparatus, a scraper provided with side walls,'a by-pass member comprising an inwardly facing track adapted for engagement with a fixed guide, a head rope at the forward end of said bypass member and a tail rope at the rear end thereof, said ropes forming with said by-pass member a continuous bearing surface for said guide, said by-pass member intersecting one side wall and supported at one side thereof to leave a passageway in said Wall for said guide,-and a shield extending krinwa-rdly and over said passageway.

Signed at Chicago, in the county of Cook and State of Illinois, this 25th daykof February, A. D. 1924.

" I y,CHARMES E. DAVIS. 

